The F# programming language will become a major .NET language with its formal debut in Visual Studio 2010, as it transitions from a Microsoft research project. F# has become a surprise hit among .NET developers. Those that can make the leap will solidify their skills and employment opportunities for the next decade and beyond.

F# also “hugely fits” the Midori programming model which Microsoft is working on

http://www.sdtimes.com/link/34251

Reading from the above, there’s no question that Microsoft is seeing Silverlight as the lightweight platform for delivering applications (web-based and mobile). Also, Microsoft might launch Midori as a new operating system for cloud data centers to up the ante against Google.